Lessons learnt in implementing a pilot community event-based surveillance system in Tiruvallur district, Tamil Nadu, India oleh Prabhdeep Kaur, Manoj Murhekar, Jeromie Wesley Vivian Thangaraj, Muthuperumal Prakash, K.G. Kolandaswamy, Premkumar Balasubramanian, Prabhakaran Jesudoss, Krishnaraj Karupasamy, Velmurugan Ganesh, Ganesh Parasuraman, Viduthalai Virumbi Balagurusamy, Vettrichelvan Venkatasamy, Kayla F Laserson, S. Arunmozhi Balajee